[Todo] Nested directories in www do not seem to copy deeply

[zaydek]

www/images/my-image.jpg copies as www/my-image. Furthermore images are not externalized by default which trips up esbuild.

const images = {
  name: 'images',
  setup(build) {
    build.onResolve({ filter: /\.(jpe?g|png)$/ }, args => {
      return {
        path: args.path,
        external: true,
      }
    })
  },
}

module.exports = {
  target: ["es2017"],
  plugins: [images],
}